Edge-burnishing tool



(No Model.)

J. E. POSS. EDGE BURNISHINGTOOL.

Patented July 2, 1889.

N. PETERS. Pho

UNTTED STATES PATENT OFFICE.

JOHN E. FOSS, or WEYMOUTH, MAssAonUsn'rrs.

EDGE-BURNISHING Tool...

SPECIFICATION forming part of Letters Patent No. 406,133, dated July 2, 1889.

Application filed March 23, 1889. Serial No. 304,511. (No model.)

To all whom it may concern:

Be it known that I, JOHN ERVING FOSS, a citizen of the United States, residing at \Veymouth, in the county of Norfolk and State of Massachusetts, haveinvented certain new and useful Improvements in Edge Burnishing Tools; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

This invention relates to edge-burnishing tools, so called; and it consists in improvements in construction, by which the toolshank is recessed or chambered to form a receptacle for the burnishing-wax employed in connection with the tool and to be applied simultaneously with the passage of said tool over the surface to be polished; further, in the combination, with the burnishing-iron and chambered toolshank, of a valve adapted to be opened upon contact of the material with the tool,being located within the latter. Thus heatbeing applied externally to the toolshank, a quantity of burnishing-wax is not only supplied, but is free to flow immediately upon application of said tool to the surface to be polished.

The drawings herewith annexed represent, in Figure 1, an enlarged longitudinal vertical section of an edge-burnishing tool embodying my invention. Fig. 2 is an end front view of the burnishing-iron, and Fig. 3 is a rear end view of the same. Fig. 4: shows a screw-plug to hold the spring against the valve, as hereinafter described.

In the accompanying drawings, 2 represents aburnishing-tool as an entirety embodying my improvem ents. Said tool is composed of two principal parts-the tool-shank 3 and the iron 4-separable from but removably connected with said shank to enable different styles of irons to be readily substituted, as occasion may require. The primary feature in my invention is providing a storage-receptacle for burnishing-wax within the tool-shank proper. To this end I have recessed said shank, and thus created a chamber 5, the open end of the latter being closed when the iron is affixed to the shank, while a supply of wax is readily introduced by removal of the burnishing-iron. The latter is of the usual form, the active or burnishing face 6 consisting of a series of polishing-surfaces, as shown, to adapt the tool to varying styles of work. Preferably centrally, or thereabout, I have perforated the burnishin g-iron longitudinally from front to rear, as shown, making the rear portion or bore 7, which opens into the waxchamber, of much larger diameter than the front portion or bore 8. In this way I form a shoulder 9, which is cone-shaped and forms a seat for the valve 10, the latter provided with a projecting cylindrical stem or terminal 12, of such length that when the valve firmly rests upon its seat the extremity of said terminal shall project slightly beyond the active surface of the burnishing-iron adjacent thereto. An adjustable plate 13, secured upon the rear end of the tool, serves to retain a spring 14 between it and the head of the valve, in order to cause the latter to close positively upon withdrawal of the tool from the material in process. The valve 10, as also its actuating-stem 12, are both less in diameter than the perforations in which they are located, in order to permit of a flow of wax readily therethrough and about the valve.

The operation is as follows: The tool-shank, open and in readiness to receive an iron suitable for the work in process, has its chamber filled with burnishing-wax. The iron is then screwed on in place. This closes the chamber for the wax. Then the iron is firmly affixed upon its shank, the stem 12 or terminal of the valve projects slightly beyond the active surface of said tool adjacent thereto. The tool is now mounted upon some suitable mechanism for producing rapid rotary movement, and heat is applied externally to the tool shank. This heat melts the wax, which is retained in a fluid state within its chamber and permitted to flow upon the work in process only when that portion or surface of the tool from which the stem projects is in contact with the work. Thus the operative is always supplied with wax, and the latter can be applied in such quantities and at such times as the state or quality of the work requires.

In lieu of the plate 13, a screw-plug may be used to maintain the spring against the valve.

In such event I proposeto cut away the sides, as shown in Fig. 4, in order to allow the Wax to pass thereahout and escape through the valve when the latter is open.

Vhat I desire'to claim is- 1. In combination with a shank having a chamber 5 to contain wax, an iron filling the end of said chamber and having a passage from its outer face to said chamber, and a valve IO for closing said passage, substantially as set forth.

2. In combination with a shank having a chamber in its end for containing Wax, an iron screwed into said end and having a passage from its working-face to the said chamber, a valve closing said passage, and a valve-sp ring 

